Type Alias ChatType

ChatType:
    | "private"
    | "bot"
    | "group"
    | "supergroup"
    | "channel"
    | "gigagroup"

Chat type. Can be:

private: PM with other users or yourself (Saved Messages)
bot: PM with a bot
group: Legacy group
supergroup: Supergroup
channel: Broadcast channel
gigagroup: Gigagroup aka Broadcast group